LASIK术后角膜地形图变化及临床疗效观察

Changes of Corneal Topography and Clinical Curative Effects after LASIK

目的探讨准分子激光原位角膜磨镶术(Laser in situ keratomileusis,LASIK)治疗近视前后角膜地形图的变化及其与临床效果和术后并发症的关系。方法对131例(250只眼)近视患者行LASIK术,术前及术后1月行视力、屈光度、角膜地形图及裂隙灯显微镜检查。结果LASIK术后视力100%较术前提高;术后角膜地形图图形以平滑型(64.5%)为主;中央岛和偏心切削发生率分别为6.29%、5.03%;SimK值较术前显著降低,降低幅度与切削度数有关;PVA值与术前相比显著降低,SRI和SAI值较术前显著增高。结论LASlK手术是目前治疗近视的最有效的方法之一,角膜地形图可帮助设计手术方案,判断手术效果,为处理术后并发症和再次补充矫正提供依据。

Objective To study the changes of corneal topography and analyze the clinical effects after LASIK for myopia. Methods The author performed LASIK for 131 cases （250 eyes ） , and observed the visual, the preoperative dioptre, corneal topography and the surface of corneal before and after LASIK. Results The vision was improved after LASIK, the main type of corneal topography was smoothing, the incidence rate of central island and decentration artheriotomy were 6.29% and 5.03%. SimK was degraded significantly, PVA was degraded significantly too, but SRI and SAI improved significantly. Conclusion LASIK is the most effective method to treat myopia and corneal topography can help design the plan of operation, judge the effect and offer clinical base for treating postoperative complications and rectification again.